Chrysophyte cysts as potential environmental indicators

Abstract

Research Article| November 01, 1981 Chrysophyte cysts as potential environmental indicators DAVID P. ADAM; DAVID P. ADAM 1U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar ALBERT D. MAHOOD ALBERT D. MAHOOD 2California Academy of Sciences, San Francisco, California 94121 Search for other works by this author on: GSW Google Scholar Author and Article Information DAVID P. ADAM 1U.S. Geological Survey, Menlo Park, California 94025 ALBERT D. MAHOOD 2California Academy of Sciences, San Francisco, California 94121 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1981) 92 (11): 839–844. https://doi.org/10.1130/0016-7606(1981)92<839:CCAPEI>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation DAVID P. ADAM, ALBERT D. MAHOOD; Chrysophyte cysts as potential environmental indicators. GSA Bulletin 1981;; 92 (11): 839–844. doi: https://doi.org/10.1130/0016-7606(1981)92<839:CCAPEI>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Many Chrysophyte algae produce morphologically distinctive, siliceous, microscopic cysts during a resting stage of their life cycles; these cysts are often preserved in sediments. Scanning electron microscopy and Nomarski optics permit much more detailed observation of these cysts than was heretofore possible. We have used an ecologic and biogeographic approach to study the distribution of cyst forms in sediments and have established that many cyst types are found only in specific habitats, such as montane lakes, wet meadows, ephemeral ponds, and Sphagnum bogs. In the samples we have studied, cysts seem to be most common in fluctuating fresh-water habitats of low to moderate pH and some winter freezing. Numerous taxonomic problems have yet to be resolved. We believe that chrysophyte cysts have the potential to become a useful tool for both modern environmental assessments and paleoecological studies of Cenozoic fresh-water lacustrine deposits. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.